384950905 has 4 divisors (see below), whose sum is σ = 461941092. Its totient is φ = 307960720.

The previous prime is 384950903. The next prime is 384950911. The reversal of 384950905 is 509059483.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509059483 = 23 ⋅22133021.

It can be written as a sum of positive squares in 2 ways, for example, as 254625849 + 130325056 = 15957^2 + 11416^2 .

It is not a de Polignac number, because 384950905 - 2¹ = 384950903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384950903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38495086 + ... + 38495095.

It is an arithmetic number, because the mean of its divisors is an integer number (115485273).

Almost surely, 2^384950905 is an apocalyptic number.

It is an amenable number.

384950905 is a deficient number, since it is larger than the sum of its proper divisors (76990187).

384950905 is an equidigital number, since it uses as much as digits as its factorization.

384950905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76990186.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 384950905 is about 19620.1657740193. The cubic root of 384950905 is about 727.4477109988.

The spelling of 384950905 in words is "three hundred eighty-four million, nine hundred fifty thousand, nine hundred five".